On-line Tools for Solar Data Compiled at the Debrecen Observatory and their Extensions with the Greenwich Sunspot Data
arXiv:1606.00669 · doi:10.1007/s11207-016-0930-1
Abstract
The primary task of the Debrecen Heliophysical Observatory (DHO) has been the most detailed, reliable, and precise documentation of the solar photospheric activity since 1958. This long-term effort resulted in various solar catalogs based on ground-based and space-borne observations. A series of sunspot databases and on-line tools were compiled at DHO: the Debrecen Photoheliographic Data (DPD, 1974--), the dataset based on the Michelson Doppler Imager (MDI) of the Solar and Heliospheric Observatory (SOHO) called SOHO/MDI--Debrecen Data (SDD, 1996--2010), and the dataset based on the Helioseismic and Magnetic Imager (HMI) of the Solar Dynamics Observatory (SDO) called SDO/HMI--Debrecen Data (HMIDD, 2010--). User-friendly web-presentations and on-line tools were developed to visualize and search data. As a last step of compilation, the revised version of Greenwich Photoheliographic Results (GPR, 1874--1976) catalog was converted to DPD format, and a homogeneous sunspot database covering more than 140 years was created. The database of images for the GPR era was completed with the full-disc drawings of the Hungarian historical observatories Ógyalla and Kalocsa (1872--1919) and with the polarity drawings of Mount Wilson Observatory. We describe the main characteristics of the available data and on-line tools.
25 pages, 11 figures, accepted for publication in Solar Physics
References in corpus (9)
- On Polar Magnetic Field Reversal and Surface Flux Transport During Solar Cycle 24
- Comparative analysis of Debrecen sunspot catalogues
- Re-examining Sunspot Tilt Angle to Include Anti-Hale Statistics
- Tilt Angle and Footpoint Separation of Small and Large Bipolar Sunspot Regions Observed with HMI
- Active Longitude and Solar Flare Occurrences
- Sunspot areas and tilt angles for solar cycles 7-10
- North-south asymmetry of solar dynamo in the current activity cycle
- Statistical study of spatio-temporal distribution of precursor solar flares associated with major flares
- An alternative measure of solar activity from detailed sunspot datasets
Cited by in corpus (53)
- Solar cycle prediction
- Visualization of the challenges and limitations of the long-term sunspot number record
- Sunspot area catalogue revisited: Daily cross-calibrated areas since 1874
- Comparative analysis of Debrecen sunspot catalogues
- Kodaikanal Digitized White-light Data Archive (1921-2011): Analysis of various solar cycle features
- On optimal tests for rotational symmetry against new classes of hyperspherical distributions
- A Relationship between the Solar Rotation and Activity Analysed by Tracing Sunspot Groups
- Solar differential rotation in the period 1964 - 2016 determined by the Kanzelhöhe data set
- Sunspot tilt angles revisited: Dependence on the solar cycle strength
- Solar-Cycle Characteristics in Kodaikanal Sunspot Area: North--South Asymmetry, Phase Distribution and Gnevyshev Gap
- Testing and Improving a Set of Morphological Predictors of Flaring Activity
- Changes in the solar rotation over two solar cycles
- Long-term Variations in Solar Activity: Predictions for Amplitude and North--South Asymmetry of Solar Cycle 25
- Different contributions to space weather and space climate from different big solar active regions
- Kanzelhöhe Observatory: instruments, data processing and data products
- Average annual total sunspot area in the last 410 years: The most probable values and limits of their uncertainties
- Meridional Motion and Reynolds Stress from Debrecen Photoheliographic Data
- A Curious History of Sunspot Penumbrae: An Update
- Sunspot Catalogue of the Observatory of the University of Coimbra (1929-1941)
- Long-Term Variations in Solar Differential Rotation and Sunspot Activity, II: Differential Rotation Around the Maxima and Minima of Solar Cycles 12-24
- Time-dependent properties of sunspot groups -- I. Lifetime and asymmetric evolution
- A Catalog of Bipolar Active Regions Violating the Hale Polarity Law, 1989-2018
- Stephan Prantner's Sunspot Observations during the Dalton Minimum
- Sunspot Observations by Hisako Koyama: 1945-1996
- Study of Sunspot Penumbra to Umbra Area Ratio using Kodaikanal White-light Digitized Data
- North-South Asymmetry in Solar Activity and Solar Cycle Prediction, V: Prediction for the North-South Asymmetry in the Amplitude of Solar Cycle 25
- Variation in solar differential rotation and activity in the period 1964-2016 determined by the Kanzelhöhe data set
- On Quasi-biennial oscillations in chromospheric macrospicules and their potential relation to global solar magnetic field
- Study of the decay rates of the umbral area of sunspot groups by using a high resolution database
- On the Decay of Sunspot Groups and Their Internal Parts in Detail
- Synthetic solar cycle for active regions violating the Hale's polarity law
- Active-Region Tilt Angles from White-Light Images and Magnetograms: The Role of Magnetic Tongues
- On the size distribution of spots within sunspot groups
- An application of the weighted horizontal magnetic gradient to solar compact and eruptive events
- Variations of the Internal Asymmetries of Sunspot Groups During their Decay
- Fractal dimensions of umbral and penumbral regions of sunspots
- The association of the Hale Sector Boundary with RHESSI solar flares and active longitudes
- Sunspot group tilt angles from drawings for cycles 19-24
- Eric Strach: four decades of detailed synoptic solar observations (1969-2008)
- Evidence for a White-light Flare on 10 September 1886
- Bayesian approach for modeling solar active region global magnetic parameters
- Modeling Magnetic Flux Emergence in Bipolar Active Regions
- Variation of sunspot groups' polarity separation during their evolution
- Evaluation of Sunspot Areas Derived by Automated Sunspot-Detection Methods
- Data-driven stabilizations of goodness-of-fit tests
- An analysis of the solar differential rotation in solar cycle No. 19 (1954-1964) determined using Kanzelhoehe sunspot group positions
- Comparison Between Cycle-to-Cycle Variations in the Coefficient of Joy's Law and Covariance of Rotation Residuals and Meridional Motions of Sunspot Groups
- Magnetic Configuration of Active Regions Associated with GLE Events
- A Study of Variations in Correlation Between Rotation Residual and Meridional Velocity of Sunspot Groups
- Modelling solar radial velocities and photometric variability with SOAPv4
- Evolution of the Sun's activity and the poleward transport of remnant magnetic flux in Cycles 21--24
- Testing the accuracy of Coimbra Astronomical Observatory solar filament historical series (1929-1941)
- Spatial Inhomogeneity In Solar Faculae